* The Chocolatey package-manager has not kept up with Python 3.6 point-releases; [the latest available version](https://chocolatey.org/packages/python3/3.6.8) is from 2018. * Python 3.6 [does not build on macOS 11 ("Big Sur")](https://github.com/gridsync/gridsync/commit/9af048d26c0333dda6712245a3b77fe1e882a273). * Python 3.6 support has just been [dropped from `autobahn`](https://github.com/crossbario/autobahn-python/commit/5e5cbe4a6ab097cb809b7f31c0128ec90ed05095). It's time to drop Python 3.6 support.